<?php

namespace app\admin\controller\dts\classes;

use app\common\controller\Backend;
use think\Db;

/**
 * 班级管理
 *
 * @icon fa fa-circle-o
 */
class Classes extends Backend
{
    protected $noNeedRight = ['selectpage'];
    /**
     * Classes模型对象
     * @var \app\admin\model\dts\Classes
     */
    protected $model = null;

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\dts\Classes;

    }

    public function selectpage() {
        return parent::selectpage();
    }

    /**
     * 默认生成的控制器所继承的父类中有index/add/edit/del/multi五个基础方法、destroy/restore/recyclebin三个回收站方法
     * 因此在当前控制器中可不用编写增删改查的代码,除非需要自己控制这部分逻辑
     * 需要将application/admin/library/traits/Backend.php中对应的方法复制到当前控制器,然后进行修改
     */

    public function index() {
        //当前是否为关联查询
        $this->relationSearch = true;
        //设置过滤方法
        $this->request->filter(['strip_tags', 'trim']);
        if ($this->request->isAjax()) {
            //如果发送的来源是Selectpage，则转发到Selectpage
            if ($this->request->request('keyField')) {
                return $this->selectpage();
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();
            
            $defaultJoin = [
                ['dts_grade grade', 'grade.id = classes.grade_id', 'left'],
                ['admin monitor', 'monitor.id = classes.monitor_id', 'left'],
                ['admin teacher', 'FIND_IN_SET(teacher.id,teacher_ids)', 'left']
            ];

            $list = Db::name('dts_classes')->alias('classes')
            ->field('classes.*,grade.name as grade__name,monitor.nickname as monitor__nickname,GROUP_CONCAT(DISTINCT teacher.nickname) teacher__nickname')
            ->join($defaultJoin)
            ->where($where)
            ->order($sort, $order)
            ->group('classes.id')
            ->paginate($limit);

            $result = array("total" => $list->total(), "rows" => paginateList($list));

            return json($result);
        }

        return $this->view->fetch();
    }

    protected function before_add($params)
    {
        $num = Db::name('dts_classes')->where('monitor_id', $params['monitor_id'])->whereRaw('FIND_IN_SET('.$params['monitor_id'].',teacher_ids) > 0')->count(1);
        if($num) {
            ajaxerror('老师已在其他班级');
        }
        $ids = explode(',', $params['teacher_ids']);
        foreach($ids as $id) {
            $num = Db::name('dts_classes')->where('monitor_id', $id)->whereRaw('FIND_IN_SET('.$id.',teacher_ids) > 0')->count(1);
            if($num) {
                ajaxerror('老师已在其他班级');
            }
        }
        $num = $this->model->where('name', $params['name'])->count(1);
        if($num) {
            ajaxerror('班级名称重复');
        }
        $params['createby'] = $this->auth->nickname;
        return $params;
    }

    protected function before_edit($params, $changeData, $originData)
    {
        if(isset($changeData['monitor_id'])) {
            $num = Db::name('dts_classes')->where('id','<>',$originData['id'])->where('monitor_id', $params['monitor_id'])->whereRaw('FIND_IN_SET('.$params['monitor_id'].',teacher_ids) > 0')->count(1);
            if($num) {
                ajaxerror('老师已在其他班级');
            }
        }
        if(isset($changeData['teacher_ids'])) {
            $ids = explode(',', $params['teacher_ids']);
            foreach($ids as $id) {
                $num = Db::name('dts_classes')->where('id','<>',$originData['id'])->where('monitor_id', $id)->whereRaw('FIND_IN_SET('.$id.',teacher_ids) > 0')->count(1);
                if($num) {
                    ajaxerror('老师已在其他班级');
                }
            }
        }
        if(isset($changeData['name'])) {
            $num = $this->model->where('name', $params['name'])->count(1);
            if($num) {
                ajaxerror('班级名称重复');
            }
        }
        $params['createby'] = $this->auth->nickname;
        return $params;
    }
}
